How to Fix the Windows 11 Remote Desktop Authentication Error

You can connect and use two computers online with the help of the Remote Desktop. When using the remote desktop, if you get an authentication error, it can be frustrating because you won’t be able to access the other computer. The error message “Remote Desktop Authentication Error” has been encountered.

“An authentication error has happened. The service you asked for is not available.’

It’s not a big deal if you encounter the Remote Desktop authentication error on Windows 11 because problems like these are familiar with Windows. To help you fix this problem, this article will show you different approaches.

Fix Remote Desktop Authentication Error on Windows 11

It’s much easier to fix an issue if you know what it’s caused. If your PC gives you a Remote Desktop Authentication Error message, it could be because your login information is wrong, your remote desktop services aren’t working, your antivirus software or other third-party antivirus software isn’t up to date, or something else.

Here are some steps you can take to fix the Remote Desktop Authentication error on Windows 11:

1. Ensure Remote Desktop is Enabled

Users frequently need to remember to turn on the Remote Desktop feature on their PC and encounter this issue. You can follow the steps below to turn on the remote desktop on Windows 11:

1. To open the Windows 11 Settings menu, press Windows + I on your computer.
2. Click on Remote Desktop under the System tab in the left sidebar. Remote Desktop
3. To turn on Remote Desktop, enable the Remote Desktop toggle and click Confirm. Click on Confirm after selecting Remote Desktop.

2. Ensure you are Entering the Correct Credentials

This issue may be encountered if you use incorrect remote desktop account credentials. Just check the credentials to see if they are correct. If you have been trying to use the wrong credentials, use the correct ones.

3. Rollback Windows Update

The real cause may be that you recently installed a Windows update and started facing this issue. The Remote Desktop Authentication error on Windows 11 should be fixed by uninstalling the update that was just loaded. You can do this by following the steps below:

1. On a Windows PC, you can open the Settings app.
2. On the left side, click Windows Update.
3. Now, click on Update History, scroll down, and click Uninstall Updates to remove the updates.
4. Find the update you just loaded and click the “Uninstall” button. Click “Uninstall” again to confirm that you want to release the update. Windows Updates should be uninstalled.
5. Now, restart your computer to use the changes.

4. Turn Off Windows Firewall

The Firewall on your PC could be the cause of this issue. Turn off the Windows Firewall and see if the issue is still encountered. 

1.     Click on the appropriate choice from the search results after opening the Start menu and searching for Windows Defender Firewall. 
2.     To turn Windows Defender Firewall on or off, click in the left pane.
3.     For Private and Public network settings, check the box next to Turn off Windows Defender Firewall (not advised). 
4.     Click OK to save the changes, and then close the Control Panel. 

Note: If you have a third-party security program on your PC, it will take care of the Firewall settings. If you use a third-party antivirus, you must turn off the firewall that comes with it. 

5. Make Changes to the Registry 

The issue should be fixed if you edit the Registry on your PC. Follow the below steps to do so:

1.  From the Start menu, open the Registry Editor. From the search bar, type Registry-Editor
2. Head to the following location here- 

   • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\CredSSP\Parameters

3. Here, you can edit AllowEncryptionOracle by double-clicking on it.
4. Now, put 2 in the Value Data field and click OK.

Note: If AllowEncryptionOracle is unavailable, right-click on the empty spot on the right, click New, and then click DWORD (32-bit) Value. Use the name AllowEncryptionOracle for the new DWORD. 

6. Enable Encryption Oracle Remediation

If encryption Oracle repair is turned off, the Remote Desktop Authentication error in Windows 11 could also happen. Observe the steps below to enable it using Group Policy Editor:

1.  Type gpedit. msc and press Enter after pressing the Windows + R key combination.
2. Navigate to the following address from the left pane-

   • Computer Configuration>Administrative Templates>System>Credentials Delegation

3.  On the right, double-click Encryption Oracle Remediation to edit it.
4.  Select “Enabled,” then click “Apply” and “OK.”
5.  Press the Windows key, type “Command Prompt,” and open it.
   
6. Here, carry out the order.
   

gpupdate /force

7. Close Command Prompt and then restart your computer.

7. Disable Network Level Authentication on RDP Server

Network-level authentication set on the RDP server is another reason you may face this issue. Try turning it off when using Remote Desktop; you won’t encounter the issue anymore.

1. O Use Windows + R to open the Run window. Enter system. cpl after typing it.
2.  Here, click on the “Remote” tab.
   
3. Choose “Allow remote connections to this computer” and uncheck “Allow connections only from computers running Remote Desktop with Network Level Authentication” (recommended). Allow remote access to this computer.

 4. Click the Apply button, then click the OK button.
5. To apply the changes to your system, restart your computer right now.

Final Words

This article should help if you constantly face an authentication error when using the remote desktop. You should no longer encounter the Remote Desktop Authentication error on Windows 11 if you follow the above instructions. If you need help with any steps, let us know in the comments.